| strata | asl_dates | asl_pct | escapement_dates | escapement_pct |
|---|---|---|---|---|
| 1 | Jun 06 to Jun 18 | 0.14 | Jun 01 to Jun 18 | 0.23 |
| 2 | Jun 19 to Jun 22 | 0.34 | Jun 19 to Jun 22 | 0.21 |
| 3 | Jun 23 to Jun 25 | 0.29 | Jun 23 to Jun 25 | 0.30 |
| 4 | Jun 26 to Jul 14 | 0.23 | Jun 26 to Aug 25 | 0.26 |
Deshka Weir 2023 - Chinook
Chinook ASL with Quartile Strata
The KS test indicates that sampling was not proportional to the run. The strata dates were designated according to the OP plan, such that each strata is as close to 25% of the run as possible. These dates could be modified to have passage and sampling percents more closely match.
LRT Tests / Plots - 4 Strata
Likelihood ratio test (G-test) indicates that sex composition does differ between time strata.
F M Sum
1 23 29 52
2 40 85 125
3 48 59 107
4 50 33 83
Sum 161 206 367
Log likelihood ratio (G-test) test of independence without correction
data: t.sex
G = 16.371, X-squared df = 3, p-value = 0.0009516
Likelihood ratio test (G-test) indicate age composition does differ between time strata.
1.1 1.2 1.3 Sum
1 21 18 6 45
2 48 33 24 105
3 37 28 20 85
4 14 27 21 62
Sum 120 106 71 297
Log likelihood ratio (G-test) test of independence without correction
data: t.age
G = 13.938, X-squared df = 6, p-value = 0.03034
ASL TABLES - 4 Strata
Chinook ASL with 3 Strata
| strata | asl_dates | asl_pct | escapement_dates | escapement_pct |
|---|---|---|---|---|
| 1 | Jun 06 to Jun 19 | 0.22 | Jun 01 to Jun 19 | 0.30 |
| 2 | Jun 20 to Jun 24 | 0.47 | Jun 20 to Jun 24 | 0.33 |
| 3 | Jun 25 to Jul 14 | 0.31 | Jun 25 to Aug 25 | 0.36 |
The strata dates were designated such that each strata was as close to 33% of the run as possible. These dates could be modified to have passage and sampling more closely match.
LRT tests - 3 Strata
Likelihood ratio test (G-test) indicates that sex composition does differ between time strata.
F M Sum
1 32 48 80
2 64 110 174
3 65 48 113
Sum 161 206 367
Log likelihood ratio (G-test) test of independence without correction
data: t.sex
G = 12.564, X-squared df = 2, p-value = 0.00187
Likelihood ratio test (G-test) indicate age composition does not differ between time strata.
1.1 1.2 1.3 Sum
1 31 29 12 72
2 59 41 35 135
3 30 36 24 90
Sum 120 106 71 297
Log likelihood ratio (G-test) test of independence without correction
data: t.age
G = 5.916, X-squared df = 4, p-value = 0.2055